Unit doesn't run
Mist comes from the unit
Noise is emitted
The unit blows out duct
The unit emits odor
7 Malfunction Display
Inquiry method of malfunction display: combine division symbol and content symbol to check the
corresponding error.
For example, division symbol L and content symbol 4 together means over-current protection.
content
symbol
division
symbol
Malfunction of
L
indoor unit
(unified)
Indoor
d
Malfunction of
E
outdoor unit
(unified)
Main board of
F
outdoor unit is
poor
Other module
J
protection
Outdoor
b
Malfunction
driven board of
P
compressor
(unified)
" Malfunction"
When unit is started immediately after it is
just turned off
When power is turned on
Under cooling
Slight cracking sound is heard when just
starts operation
There is consecutive sound when cooling
There is sound when unit starts or stops
There is slight and consecutive sound when
unit is running or after running
Cracking sound is heard when unit is
operating and after operating
When unit runs after no operation for a long
period
Operating
0
1
Indoor fan
protection
Indoor PCB
is poor
High
pressure
protection
Malfunction
of high
pressure
sensor
Overcurrent
protection of
compressor
1
Malfunction
of outdoor
ambient
temperature
sensor
Abnormal
operation of
driven board
of
compressor
(unified)
Overload protection switch makes it run after 3
minutes delay
Standby operating for about 1 minute
Indoor high humidity air is cooled rapidly
It is noise when electronic expansion valve
initialization
That's sound for gas refrigerant flowing in unit
That's sound for gas refrigerant stops to flow
That's sound for operation of drainage system
That's sound caused by expansion of panel and
other parts due to temperature change
Dust in indoor unit is blew out
The room odor absorbed by the unit is blew out
again
2
Auxiliary
Water overflow
heating
protection
protection
Malfunction
Malfunction of
of lower water
ambient
temperature
temperature
sensor inside
sensor
the water tank
Low discharge
Low pressure
temperature
protection
protection
Malfunction of
low pressure
sensor
Overcurrent
Overcurrent
protection of
protection of
compressor 2
compressor 3
Malfunction of
Malfunction of
defrosting
defrosting
temperature
temperature
sensor 1
sensor 2
Voltage
Reset
protection of
protection of
driven board of
driven module
compressor
of compressor
(unified)
29
Causes
3
4
Abnormal power
supply for wired
controller
Malfunction inlet
pipe temperature
sensor
High discharge
protection of
compressor
Overcurrent
protection of
compressor 3
Malfunction of
liquid outlet
temperature
sensor for
subcooler
Driven PFC
protection of
compressor
5
Freeze
prevention
protection
Malfunction of
middle
temperature
sensor
Malfunction of
discharge
temperature
sensor for
compressor 1
Overcurrent
protection of
compressor 5
Malfunction of
gas outlet
temperature
sensor for
subcooler
Overcurrent
protection for
inverter
compressor